[빌드오류]Jack is required to support java 8 language features.

AndroidStudio와 친해지는중 .. 

오류 잡기

Error:Jack is required to support java 8 language features. Either enable Jack or remove sourceCompatibility JavaVersion.VERSION_1_8.

인 경우 하기처럼 app gradle에 추가해주면 됨 

 defaultConfig { 
......
jackOptions {
        enabled true
    }
}